Remove bogus dependency on anyhow

This might make it slightly easier to reuse this, but otherwise makes
no difference at all. Somehow this slipped past the compiler's unused
import checking.

Test: Builds
Change-Id: Ieb833ad751c69f74435a4aefa17486bb7c5a2ad5
diff --git a/compos/common/binder.rs b/compos/common/binder.rs
index ae857e0..4935b80 100644
--- a/compos/common/binder.rs
+++ b/compos/common/binder.rs
@@ -16,7 +16,6 @@
 
 //! Helper for converting Error types to what Binder expects
 
-use anyhow::Result;
 use binder::{ExceptionCode, Result as BinderResult};
 use binder_common::new_binder_exception;
 use log::warn;